Spring shackle



March 11, 1930. DH 005 1,749,848

SPRING SHACKLE Filed NOV. 11, 1927 INVENTOR. aimed. Roe:

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' a ATTO' Patented Mar. 11, 1930 UNITED STATES PATENT OFFICE DELMAR G. -ROOS, OF SOUTH BEND, INDIANA, ASSIGNOR TO THE STUDEBAKER COR- PORATION, OF SOUTH BEND, INDIANA, A CORPORATION OF NEW JERSEY SPRING SHACKLE Application filed November 11, 1927. Serial No. 232,586.

This invention relates to vehicle springs and particularly to means for shackling the same to the vehicle frame.

It is a common practice in spring shackles of the ball bearing type, to provide a straight shackle pin having bearing surfaces at its ends for the ball bearings which is either pressed into the spring eye or is free to rotate therein, there being no positive means provided to hold the pin against longitudinal movement. After running a considerable number of tests on these conventional constructions, it has been found that the squeaking of the shackle is due to the fact that the pins have moved longitudinally, which allows the shackle links to contact with and rule against the sides of the spring eye and frame spring hanger, hence, 1t 15 the prlnclpal object of the present invention to provide a vehicle spring shackle with means for holding the same against longitudinal movement to prevent one of the shackle links from engaging the sides of the spring and spring hanger.

Another object is to provide a vehicle spring shackle with a shackle pin having a shoulder thereon at one end abutting against one side of the spring hanger or spring eye and having a' circumferential groove at the other end receiving a split circular ring abutting against the other side of the spring eye or spring hanger, to hold the shackle links in spaced relation with the spring and spring hanger.

Another object is to provide a spring shackle of the ball bearing type with a shackle pin having circular grooves at its ends which receive split spring rings that abut against the sides of the spring eye to anchor the pin against longitudinal movement whereby the shackle links are prevented from contacting with the sides of the spring to eliminate squeaking thereof.

These being among the objects of the present invention, the same consists of certain features of construction and combinations of parts to be hereinafter described with ref erence to the accompanying drawing, and then claimed, having the other and other objects in view. 7

In the accompanying drawing which illustrates a suitable embodiment of the present invention,

Fi ure 1 is a side view of a vehicle frame mem' er, showing a spring connected thereto by a spring shackle.

Figure 2 is an enlarged section taken on the line 2-2 of Figure 1 showing two diiferent types of shackle pins incorporated therein.

Figure 3 is a section taken on the line 33 of Figure 2 showing the section of the lower pin.

Figure 4 is a section taken on the line 4-4 of Figure 2, showing a section of the upper pin.

Figure 5 is a view of a modified form of pin having a serrated surface.

Figure 6 is a view of a modified pin having1 two circumferential grooves formed at its enc s.

Referring to the accompanying drawing, in which like numerals refer to like parts throughout the several views, the frame spring hanger 10 is formed with a vertical face and a horizontal face which respectively seat against andare secured by rivets 11 to the vertical web and horizontal flange of the frame channel 12 of the vehicle frame. The frame spring hanger 10 extends downwardly below the horizontal flange of the spring hanger 10 and is provided with a hori zontally extending opening 13. The upper shackle pin 14 is preferably forced into the opening 13 to hold the same against rotation and is provided with a circumferential flange 15 at one end which abuts against the outer face of the spring hanger 10. The flange 15 gives added strength to the pin 14: by increasing the area subjected to the greatest shearing stress, and many tests have proven that the adding of strength to the pin lt at the point shown is of material value. A circular groove 16 is formed around the end of the pin 14L which projects past the inner surface of the spring hanger 10, and a split ring 17 preferably of spring material is received therein. The pin 14 is consequently held against longitudinal movement in one direction by the flange 15 at the one end, and is held against longitudinal movement in the other direction by the split ring 17 seated in at both ends of the pin 37 to hold the same the groove 16 at the other end thereof. The against movement in a longitudinal direc- V intersecting corners of the cylindrical surtion. c

face and end faces of the pin 14, are filleted It is believed that the present invention has 5 to provide curved bearing seats 18. been sufficiently described so that anyone 70 into the spring eye 20, abuts against the other against longitudinal movement, the shackle r face of the spring eye 19 for the same purlinks are prevented from contacting With and 15 andaizz ssatii22 :5:5263?: gfitiig h3%,;231;ttfiiyj afifi5 mg};

u w ll/l/l/llf W/lW/W/W/tl/l/M/W/M l/l/lf/l/l W rma W M iii fi/lt/y/lll/fltfi W1; 4? 1' i t it t l I flit W pit/Mtg fl taste/(l0. Although tv0d1'fferentlypos dry M M M a i t t W llll it u .u t i .u.\ attJthCl I!" Liv boas l8 bmrqona l qeac at m 12 p0 um mm M mm YILWTTYP Itih m 'rnr M'm mmm IANv A against the adjacent side of said s ring and spring hanger respectively, said anges in creasing the areas of said pins subjected to the greatest shearing stresses, means on said pins adjacent the ends opposite said flanges for anchoring said pins against longitudinal movement toward said spring and spring hanger, and a pair of spaced complementary shackle links connecting said pins, said anchored pins restraining said shackle links from engaging said spring and hanger.

4. In a s ring shackle, a pair of complementary li s connecting the spring and vehicle frame, a pin extending through said spring pivotally connected with said links, an abutment formed on said pin adjacent one end thereof, a groove in said pin adjacent the end opposite said abutment, and a clip seated in said groove, said abutment and clip restraining said pin against transverse movement relative to said spring and frame.

5. In a spring shackle, a pair of com lementary links connecting a spring mem er and vehicle frame member, a pin extending through one of said members pivotally supported in said links, a flange on said pin adjacent one end thereof, a groove in said pin adjacent the end opposite said flange, and a clip seated in said groove, said flange and said clip restraining said pin against longitudinal movement in said member.

6. In a spring shackle, a pair of complementary links connecting the spring and vehicle frame, a pin extending through said spring pivotally connected with said links, means to restrain said pin against rotatable movement relative to said spring and frame, a flange formed on said pin adjacent one end thereof, a groove in said pin adjacent the end opposite said flange, and a clip seated in said groove, said flange and clip restraining said pin against movement transversely of said spring and frame.

7. In a spring shackle, a pair of complementary links connectin a spring member and a vehicle frame mem er, a pin extending through one of said members and pivotally connected with said links, serrations on said pin to restrain the same against rotational movement in said pin supporting member, an abutment formed on said pin adjacent one end thereof, a groove in said pin adjacent the end opposite said abutment, and a clip seated in said groove, said abutment and clip restraining said pin against movement transversely of said pin supporting member.

Signed by me at South Bend, Indiana, this 7th day of November, 1927.

' DELMAR G. ROOS. 

